Share-based Compensation (Details - Option Activity) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the beginning of the period	388,900	255,200	260,200
Outstanding at the beginning of the period	$ 11	$ 19	$ 212
Weighted Average Remaining Contractual Life, Forfeited/expired	9 years 14 days	7 years 6 months 7 days	8 years 7 months 2 days
Aggregate Intrinsic Value at the beginning	$ 486	$ 0	$ 0
Granted (in shares)	969,000	300,000	65,000
Granted (in dollars per share)	$ 7	$ 9	$ 3
Exercised (in shares)	25,000	109,500	0
Exercised (in dollars per share)	$ 4	$ 4	$ 0
Forfeited (in shares)	(117,000)	(56,800)	(70,000)
Forfeited (in dollars per share)	$ 10	$ 27	$ 4
Weighted Average Remaining Contractual Life, Forfeited/expired			6 years 8 months 12 days
Exercised (in shares)	(25,000)	(109,500)	0
Outstanding at the end of the period	1,215,900	388,900	255,200
Outstanding at the end of the period	$ 8	$ 11	$ 19
Aggregate Intrinsic Value at the end	$ 82	$ 486	$ 0
Vested and exercisable at the end of the period (in shares)	113,900
Vested and exercisable at the end of the period (in dollars)	$ 16
Vested and exercisable at the end of the period	7 years 5 months 12 days
Vested and exercisable at year end	$ 27
Expected to vest at the end of the period (in shares)	1,102,000
Expected to vest at the end of the period (in dollars)	$ 7
Expected to vest at the end of the period	9 years 2 months 15 days
Expected to vest at year end	$ 55